Work on your combos in randori. Try them from different angles and different grips. It’s a good time to figure out what works on what kind of opponent.
I’d say I go at about 80% during randori. I try to work certain techniques I want to work on while staying active and not spending too much time on getting a perfect setup, since they almost never happen. Anything more would be a waste of energy and would be sort of dickish. Anything less would normally get me slammed on a regular basis and wouldn’t be very realistic.